Alpha innotec L8 SPLIT Owner's manual

83019600bUK – Translation of the original operating manual

Air/Water Heat Pumps

Outdoor installation

Operating Manual

L…Split – series

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Table of Contents

1 Important information .......................................3

1.1 Safety information ..........................................3

1.2 Personnelqualications ................................3

1.3 Symbols ...........................................................4

1.4 Safetyprecautions .........................................4

1.5 Serial number .................................................7

1.6 MaintenanceofL…Split ................................7

1.7 Recovery .........................................................8

1.8 Environmentalinformation ............................ 8

1.9 Checklist:Checksbeforecommissioning ..9

2 Deliveryandhandling ..................................... 10

2.1 Transportandstorage .................................10

2.2 Assembly .......................................................10

2.3 Removingthecovers ................................... 15

3 Theheatpumpdesign ...................................16

3.1 ListofcomponentsL…Split ........................17

3.2 Electricalpanel .............................................18

3.3 Sensor ............................................................19

4 Pipeconnections ..............................................21

5 Electricalconnections ....................................21

5.1 General ..........................................................21

5.2 Electricalcomponents .................................22

5.3 Accessibility,electricalconnection ............22

5.4 Connections ..................................................23

6 Commissioningandadjusting ....................24

7 Control - Heat pump ........................................24

8 Disturbancesincomfort ................................25

9 Accessories ......................................................... 25

10 Alarm list ...............................................................26

11 Technicaldata ....................................................29

11.1 Dimensions ...................................................29

11.2 Soundpressurelevels ................................. 32

11.3 Technicalspecications .............................33

11.4 Workingarea.................................................35

11.5 CapacityandCOP .......................................35

11.6 Outputwithlowerfuseratingthan

recommended ...............................................36

11.7 Electricalcircuitdiagram ............................37

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

1 Important information

Installationdata

Produkt L…Split

Serial number

Service code

Installation date

Installer

Alwaysspecifytheservicecodeandserialnumber.

Certicationthattheinstallationiscarriedoutaccordingtoinstructions

intheinstallermanualandapplicableregulations.

Date Signed

1.1 Safety information

Thismanualdescribesinstallationandserviceproce-

dures for implementation by specialists. The manual

mustbeleftwiththecustomer.

1.2 Personnelqualications

Allinstructionalinformationinthisoperatingmanualis

solelydirectedatqualied,skilledpersonnel.

Onlyqualied,skilledpersonnelareabletocarryout

theworkontheunitsafetyandcorrectly.Interference

by unqualied personnel can cause life-threatening

injuriesanddamagetoproperty.

► Ensure that the personnel are familiar with the

local regulations, especially those on safe and

hazard-awareworking.

► Only allow qualied personnel with “electrical”

training to carry out work on the electrical and

electronicsystems.

► Allow qualied, skilled personnel only to do any

otherworkonthesystem,e.g.

● Heatinginstaller

● Plumbinginstaller

● Refrigerationsysteminstaller

 (maintenancework)

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

1.3 Symbols

NOTE

Thissymbolindicatesdangerto

personormachine.

CAUTION

Thissymbolindicatesimportantinfor-

mationaboutwhatyoushouldobserve

whenmaintainingyourinstallation.

TIP

Thissymbolindicatestipsonhowto

facilitateusingtheproduct.

1.4 Safetyprecautions

CAUTION

Install the system in full accordance with this

installation manual.

Incorrectinstallationcancausebursts,personalinju-

ry,waterleaks,refrigerantleaks,electricshocksand

re.

Pay attention to the measurement values before

working on the cooling system, especially when

servicing in small rooms, so that the limit for the

refrigerant’s concentration is not exceeded.

Consultanexperttointerpretthemeasurementval-

ues.Iftherefrigerantconcentrationexceedsthelimit,

theremaybeashortageofoxygenintheeventofany

leak,whichcancauseseriousinjury.

Use original accessories and the stated compo-

nents for the installation.

Ifpartsotherthanthosestatedbyusareused,

waterleaks,electricshocks,reandpersonalinjury

mayoccurastheunitmaynotworkproperly.

Ventilate the working area well – refrigerant leak-

age may occur during service work.

Iftherefrigerantcomesintocontactwithnaked

ames,poisonousgasiscreated.

Install the unit in a location with good support.

Unsuitableinstallationlocationscancausetheunitto

fallandcausematerialdamageandpersonalinjury.

Installationwithoutsucientsupportcanalsocause

vibrationsandnoise.

Ensure that the unit is stable when installed, so

that it can withstand earthquakes and strong

winds.

Unsuitableinstallationlocationscancausetheunitto

fallandcausematerialdamageandpersonalinjury.

The electrical installation must be carried out by

a qualied electrician and the system must be

connected as a separate circuit.

Powersupplywithinsucientcapacityandincorrect

functioncancauseelectricshocksandre.

Use the stated cables for the electrical connec-

tion, tighten the cables securely in the terminal

blocks and relieve the wiring correctly

to prevent overloading the terminal blocks.

Looseconnectionsorcablemountingscancauseab-

normalheatproductionorre.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Do not install the unit where corrosive gas (for

example nitrous fumes) or combustible gas or

steam (for example thinner and petroleum gases)

can build up or collect, or where volatile combus-

tible substances are handled.

Corrosivegascancausecorrosiontotheheatex-

changer,breaksinplasticpartsetc.andcombustible

gasorsteamcancausere.

Do not use the unit where water splashes may

occur, for example in laundries.

Theindoorsectionisnotwaterproofandelectric

shocksandrecanthereforeoccur.

Do not use the unit for specialist purposes such

as for storing food, cooling precision instru-

ments, freeze-conservation of animals,

plants or art.

Thiscandamagetheitems.

Do not install and use the system close to equip-

ment that generates electromagnetic elds or

high frequency harmonics.

Equipmentsuchasinverters,standbysets,medical

highfrequencyequipmentandtelecommunications

equipmentcanaecttheunitandcausemalfunctions

andbreakdowns.Theunitcanalsoaectmedical

equipmentandtelecommunicationsequipment,

sothatitfunctionsincorrectlyornotatall.

Do not install the outdoor unit in the locations

stated below.

● Locationswhereleakageofcombustiblegascan

occur.

● Locations where carbon bre, metal powder or

otherpowderthatcanentertheair.

● Locations where substances that can aect the

unit, forexample, sulphide gas, chlorine,acid or

alkalinesubstancescanoccur.

● Locationswithdirectexposuretooilmistorsteam.

● Vehiclesandships.

● Locationswheremachinesthatgeneratehighfre-

quencyharmonicsareused.

● Locations where cosmetic or special sprays are

oftenused.

● Locationsthatcanbesubjectedtodirectsaltyat-

mospheres.Inthiscase,theoutdoorunitmustbe

protectedagainstdirectintakesofsaltyair.

● Locationswherelargeamountsofsnowoccur.

● Locationswherethesystemis exposed tochim-

neysmoke.

Check, after completed installation or service,

that no refrigerant leaks from the system in gas

form. Ifrefrigerantgasleaksintothehouseand

comesintocontactwithanaerotemp,anovenoroth-

erhotsurface,poisonousgasesareproduced.

Switch o the compressor before opening/

breaching the refrigerant circuit.

Iftherefrigerantcircuitisbreached/openedwhilstthe

compressorisrunning,aircanentertheprocesscir-

cuit.Thiscancauseunusuallyhighpressureinthe

processcircuit,whichcancauseburstsandpersonal

injury.

Switch o the power supply in the event of a ser-

vice or inspection.

Ifthepowersupplyisnotshuto,thereisariskof

electricshocksanddamageduetotherotatingfan.

Do not run the unit with removed panels or pro-

tection.

Touchingrotatingequipment,hotsurfacesorhigh

voltagepartscancausepersonalinjuryduetoentrap-

ment,burnsorelectricshocks.

Cut the power before starting electrical work.

Failuretocutthepowercancauseelectricshocks,

damageandincorrectfunctionoftheequipment.

CARE

Carry out the electrical installation with care.

Donotconnectthegroundleadtothegasline,wa-

terline,lightningconductorortelephoneline'sground

lead.Incorrectgroundingcancauseunitfaultssuch

aselectricshocksduetoshort-circuiting.

Use main switch with sucient breaking

capacity.

Iftheswitchdoesnothavesucientbreaking

capacity,malfunctionsandrecanoccur.

Always use a fuse with the correct rating

in the locations where fuses are to be used.

Connectingtheunitwithcopperwireorother

metalthreadcancauseunitbreakdownandre.

Cables must be routed so that they are not

damaged by metal edges or trapped by panels.

Incorrectinstallationcancauseelectricshocks,

heatgenerationandre.

Do not install the unit in close proximity to loca-

tions where leakage of combustible gases can

occur.Ifleakinggasescollectaroundtheunit,re

mayoccur.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

If the bottom frame of the outdoor section is cor-

roded, or in any other way damaged, due to long

periods of operation, it must not be used.

Usinganoldanddamagedframecancausetheunit

tofallandcausepersonalinjury.

If soldering near the unit, ensure that solder

residue does not damage the drip tray.

Ifsolderresidueenterstheunitduringsoldering,

smallholescanappearinthetrayresultinginwater

leakage.Topreventdamage,keeptheindoorunitin

itspackingorcoverit.

Do not allow the drainage pipe to exit into

channels where poisonous gases, containing

sulphides for example, can occur.

Ifthepipeexitsintosuchachannel,anypoisonous

gaseswillowintotheroomandseriouslyaectthe

user'shealthandsafety.

Insulate the unit's connection pipes so that the

ambient air moisture does not condense on them.

Insucientinsulationcancausecondensation,which

canleadtomoisturedamageontheroof,oor,furni-

tureandvaluablepersonalproperty.

Do not install the outdoor unit in a location where

insects and small animals can inhabit.

Insectsandsmallanimalscanentertheelectronic

partsandcausedamageandre.Instructtheuser

tokeepthesurroundingequipmentclean.

Take care when carrying the unit by hand.

Iftheunitweightsmorethan20kg,itmustbecarried

bytwopeople.Wearsafetyglovestominimisethe

riskofcuts.

Dispose of any packaging material correctly.

Anyremainingpackagingmaterialcancauseperson-

alinjuryasitmaycontainnailsandwood.

Do not touch any buttons with wet hands.

Thiscancauseelectricshocks.

Do not touch any refrigerant pipes with your

hands when the system is in operation.

Duringoperationthepipesbecomeextremelyhotor

extremelycold,dependingonthemethodofopera-

tion.Thiscancauseburninjuriesorfrostinjuries.

Do not shut o the power supply immediately

after operation has start.

Waitatleast5minutes,otherwisethereisariskof

waterleakageorbreakdown.

Do not control the system with the main switch.

Thiscancausereorwaterleakage.Inaddition,the

fancanstartunexpectedly,whichcancauseperson-

alinjury.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

1.5 Serial number

Youcanndtheservicecodeandtheserialnumber

(PF3)ontheright-handsideofL…Split.

CAUTION

Youneedtheproduct’sservicecode

andserialnumberforservicingand

support.

1.6 MaintenanceofL…Split

Regularchecks

Your HSV Split only requires minimal maintenance.

Thecondensationhoseshouldbecheckedtoensure

thatcondensationcanrunouttoadrain.Ifthereisany

suspicion of leakage, pipe connections on L…Split

shouldbechecked.

NOTE

Insucientoversightcancauseseri-

ousdamagetoL…Splitwhichisnot

coveredbytheguarantee.

CheckinggrillesandbottompanelonL…Split

Checkthattheinletgrilleisnotcloggedbyleaves,

snoworanythingelseregularlythroughouttheyear.

Youshouldbevigilantduringwindyconditionsand/

orintheeventofsnowasthegrillescanbecome

blocked.

Alsocheckthatthedrainholesinthebottompanel

(three)arefreefromdirtandleaves.

Regularlycheckthatcondensationisroutedaway

correctlythroughthecondensationpipe.Askyour

installerforassistanceifrequired.

Cleaningtheoutercasing

Ifnecessarytheoutercasingcanbecleanedusinga

dampcloth.Caremustbeexercisedsothattheheat

pumpisnotscratchedwhencleaning.Avoidspraying

waterintothegrillesorthesidessothatwaterpene-

tratesintoL…Split.PreventL…Splitcomingintocon-

tactwithalkalinecleaningagents.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Keepfreeofsnowandice

Preventsnowfrombuildingupandcoveringthegrilles

anddrainholesonL…Split.

Keepfreeofsnowand/orice.

Silentmode

Theheatpumpcanbesetto"silentmode",which

reducestheheatpump'snoiselevel.Thefunctionis

usefulwhenL…Splitmustbeplacedinnoisesensi-

tiveareas.Thefunctionshouldonlybeusedforlimit-

edperiodsasL…Splitmaynotreachitsdimensioned

output.

Savingtips

Yourheatpumpinstallationproducesheatandcool-

ingand/orhotwater.Thisoccursviathecontrolset-

tingsyoumade.

Factorsthataecttheenergyconsumptionare,for

example,indoortemperature,hotwaterconsump-

tion,theinsulationlevelofthehouseandwhetherthe

househasmanylargewindowsurfaces.Theposition

ofthehouse,e.g.windexposureisalsoanaecting

factor.

Alsoremember:

● Openthethermostatvalvescompletely(exceptin

the rooms that are to be kept cooler for various

reasons, e.g. bedrooms). The thermostats slow

the ow in the heating system, which the heat

pump wants to compensate with increased tem-

peratures. It then works harder and consumes

moreelectricalenergy.

● Reduce or adjust the settings for heating in any

externalcontrolsystems.

1.7 Recovery

Leavethedisposalofthepackagingtothe

installer who installed the product or to

specialwastestations.

Donotdisposeofusedproductswithnor-

malhouseholdwaste.Itmustbedisposedofataspe-

cialwastestationordealerwho providesthis typeof

service.

Improper disposal of the product by the user results

inadministrativepenaltiesinaccordancewithcurrent

legislation.

1.8 Environmentalinformation

Thisunitcontainsauorinatedgreenhousegasthatis

coveredbytheKyotoagreement.

The equipment contains R410A, a uorinated green-

housegaswithaGWPvalue(GlobalWarmingPoten-

tial) of 2088. Do not release R410A into the atmos-

phere.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

1.9 Checklist:Checksbeforecommissioning

Refrigerantsystem Notes Checked

Pipelength

Heightdierence

Pressurization test

Leaktesting

Endpressurevacuum

Pipe insulation

Electricalinstallation Notes Checked

Property'smainfuse

Group fuse

Loadmonitor/currentsen-

sor(Connectstoindoormod-

ule/controlmodule.)

KWS

Wheninstalling

L6Split/HSVSplit6,

checkthatthesoftwarever-

sionoftheindoormodule/

controlmoduleisatleast

v8320.

Cooling Notes Checked

Pipesystem,condensation

insulation

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

2 Deliveryandhandling

2.1 Transportandstorage

L…Splitmustbetransportedandstoredvertically.

NOTE

Ensurethattheheatpumpcannotfall

overduringtransport.

2.2 Assembly

● PlaceL…Splitoutdoorsonasolidlevelbasethat

cantaketheweight,preferablyaconcretefounda-

tion.Ifconcreteslabsareusedtheymustreston

asphaltorshingle.

● The concrete foundation or slabs must be posi-

tionedsothattheloweredgeoftheevaporatoris

attheleveloftheaveragelocalsnowdepth;how-

ever,aminimumof300mm.

● L…Split sollte should not be positioned next to

noisesensitivewalls,forexample,nexttoabed-

room.

● Also ensure that the placement does not incon-

veniencetheneighbours.

● L…Splitmustnotbe placed so thatrecirculation

of the outdoor air can occur. This causes lower

outputandimpairedeciency.

● The evaporator should be sheltered from direct

wind,whichnegativelyaectsthedefrostingfunc-

tion. Place L…Split protected from wind against

theevaporator.

● Large amounts of condensation water, as well

as melt waterfrom defrosting,can be produced.

Condensationwatermustbeledotoadrainor

similar.

● Caremustbeexercisedsothattheheatpumpis

notscratchedduringinstallation.

DonotplaceL…Splitdirectlyonthelawnorothernon

solidsurface.

Ifthereisariskofsnowslipfromroof,aprotec-

tiverooforcovermustbeerectedtoprotecttheheat

pump,pipesandwiring.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Liftfromthestreettothesetuplocation

Ifthebaseallows,thesimplestthingistouseapallet

trucktomovetheL…Splittothesetuplocation.

NOTE

Thecentreofgravityisosettoone

side(seeprintonthepackaging).

IfL…Splitneedstobetransportedacrosssoftground,

suchasalawn,werecommendthatacranetruckis

usedthatcanlifttheunittotheinstallationlocation.

WhenL…Splitisliftedwithacrane,thepackaging

mustbeundamagedandtheloaddistributedwitha

boom,seetheillustrationabove.

IfacranecannotbeusedL…Splitcanbetransported

usinganextendedsacktruck.L…Splitmustbeused

onthesidemarked"heavyside"andtwopeopleare

requiredtogettheL…Splitup.

Liftfromthepallettonalpositioning

Beforeliftingremovethepackagingandthesecuring

strap to the pallet.

Placeliftingstrapsaroundeachmachinefoot.Lifting

fromthepallettothebaserequiresfourpersons,one

foreachliftingstrap.

Itisnotpermittedtoliftanythingotherthanthema-

chinefeet.

Scrapping

Whenscrapping,theproductisremovedinreverse

order.Liftbythebottompanelinsteadofapallet!

Condensationruno

Condensationrunsoutontothegroundbelow

L…Split.Toavoiddamagetothehouseandheat

pump,thecondensationmustbegatheredand

drainedaway.

NOTE

Itisimportanttotheheatpumpfunc-

tionthatcondensationwaterisled

awayandthatthedrainfortheconden-

sationwaterrunoisnotpositionedso

thatitcancausedamagetothehouse.

NOTE

Toensurethisfunction,theaccessory

KWSshouldbeused.(Notincluded)

NOTE

Theelectricalinstallationandwiring

mustbecarriedoutunderthesupervi-

sionofanauthorisedelectrician.

NOTE

Selfregulatingheatingcablesmustnot

beconnected.

● Thecondensationwater(upto50litres/24hrs)

mustberoutedawaybyapipetoanappropriate

drain,itisrecommendedthattheshortestoutdoor

lengthpossibleisused.

● The section of the pipe that can be aected by

frostmustbeheatedbytheheatingcabletopre-

ventfreezing.

● RoutethepipedownwardfromL…Split.

● Theoutletofthecondensationwaterpipemustbe

atadepththatisfrostfreeoralternativelyindoors

(withreservationforlocalordinancesandregula-

tions).

● Useawatertrapforinstallationswhereaircircu-

lationmayoccurinthecondensationwaterpipe.

● Theinsulationmustbetightagainstthebottomof

thecondensationwatertrough.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Drainpanheater,control

Thedrainpanheaterissuppliedwithpowerwhenone

ofthefollowingconditionsismet:

1. Thecompressorhasbeeninoperationforatleast

30 minutes after last start..

2. Theambienttemperatureislowerthan1°C.

Recommendedalternativeforleadingo

condensationwater

Drainindoors

1 Joint

2 Water seal

Thecondensationwaterisleadtoanindoordrain

(subjecttolocalrulesandregulations).

Routethepipedownwardfromtheair/waterheat

pump.

Thecondensationwaterpipemusthaveawaterseal

topreventaircirculationinthepipe.

KWSsplicedasillustrated.Piperoutinginsidehouse

notincluded.

Stonecaisson

1 Frostproofdepth

Ifthehousehasacellarthestonecaissonmustbe

positionedsothatcondensationwaterdoesnotaect

thehouse.Otherwisethestonecaissoncanbeposi-

tioneddirectlyundertheheatpump.

Theoutletofthecondensationwaterpipemustbeat

frostfreedepth.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Gutterdrainage

NOTE

Bendthehosetocreateawaterseal,

see illustration.

1 Fromair/waterheatpump

2 Water seal

3 Water seal

4 Frostfreedepth

● Theoutletofthecondensationwaterpipemustbe

atfrostfreedepth.

● Routethepipedownwardfromtheair/waterheat

pump.

● The condensation waterpipe musthavea water

sealtopreventaircirculationinthepipe.

● Theinstallationlengthcanbeadjustedbythesize

ofthewaterseal.

CAUTION

Ifnoneoftherecommendedalterna-

tivesisusedgoodleadoofconden-

sationwatermustbeassured.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Installation area

TherecommendeddistancebetweenL…Splitandthe

housewallmustbeatleast15cm.Clearanceabove

L…Splitshouldbeatleast100cm.However,free

spaceinfrontmustbe100cmforfutureservicing.

1 Freespacebehind

2 MinimumdistanceduringuseofseveralL…Split

3 However,thefreespaceinfrontmustbe100cmforfutureservicing

4 MinimumdistanceduringuseofseveralL…Split

30cm

100cm

30cm

15cm

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

2.3 Removingthecovers

L6Split

L8Split

L12Split

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

3 Theheatpumpdesign

ComponentlocationsL6Split

ComponentlocationsL8Split

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

ComponentlocationsL12Split

3.1 ListofcomponentsL…Split

Pipeconnections

QM36 Servicevalve,liquidside

QM37 Servicevalve,gasside

XL20 Connection,service

XL52 Connection,gasline

XL53 Connection,liquidline

Electricalcomponents

EB11(DH) Drain pan heater

GQ1(FM01) Fan

GQ2(FM02) Fan

PWB1 Controlboard

PWB2 Inverterboard

PWB3 Filterboard

X1(TB) Terminalblock,incomingsupplyand

communication

Coolingcomponents

EB10(CH) Compressor heater

EP1 Evaporator

GQ10(CM) Compressor

QN1(EEV-H) Expansionvalve,heating

QN2(20S) 4-wayvalve

QN3(EEV-C) Expansionvalve,cooling

Sensorsetc.

BP2(63H1) Highpressurepressostat

BP8(LPT) Lowpressuretransmitter

Miscellaneous

PF3 Serial number plate

DesignationsatcomponentpositionsaccordingtostandardEN81346-2.

Designationswithinbracketsaccordingtothesupplier’sstandard.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

3.2 Electricalpanel

Componentlocations

L…Split,L6Split

ElectricalcomponentsL…Split

CH Compressor heater

DH Drain pan heater

F Fuse

FM01 Fan motor

PWB1 Controlboard

PWB2 Inverterboard

PWB3 Filterboard

TB Terminalblock,incomingsupplyand

communication

1 Cableholder

Componentlocations

L8Split

Designationsatcomponentpositionsaccordingto

standardEN81346-2.

Designationswithinbracketsaccordingtothe

supplier’sstandard.

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

Componentlocations

L12Split

BE1(CT) Current sensor

BT28(Tho-A) Outdoortemperature

BP1(63H1) Highpressurepressostat

BP2(LPT) Lowpressuretransmitter

GQ1(FM01) Fan

GQ2(FM02) Fan

GQ10(CM)

Compressor

1 Reactor

2 AFmodul

3 Diodemodul

4 Capacitor

5 PWB2

3.3 Sensor

Positioningthetemperaturesensor

OutdoormoduleL6Split

OutdoormoduleL8Split/L12Split

1 Incomingsupply

QN1(EEV-H) Expansionvalve,heating

QN2(20S) 4-wayvalve

QN3(EEV-C) Expansionvalve,cooling

Tho-D Hotgassensor

Tho-R1 Evaporatorsensor,out

Tho-R2 Evaporatorsensor,in

Tho-S Suctiongassensor

Subject to change without notice | 83019600bUK – Translation of the original operating manual | ait-deutschland GmbH

DataforsensorininL8Split,L12Split

Tho-D

Tho-S,Tho-R1,Tho-R2

Tho-A(BT28)

DataforsensorininL6Split

Tho-D

Tho-A,R

1 Resistance(kΩ)

2 Temperature(°C)

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Alpha innotec L8 SPLIT, L Split Series, L12 SPLIT, L6 Split, LSplit Owner's manual

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